NumSum and Other MicroApplications

I've been playing with a writable Web application called NumSum, a Web-based spreadsheet. Here's a little test spreadsheet I created. They have a "blog this" feature which creates an iFrame of the spreadsheet. Here's what it looks like:

Go ahead and change some cells and it will recalculate. Your changes won't be persistent. This is unlikely to put Office out of business anytime soon, but as a demo application, it shows just how far this might go. Doesn't feel like a Web-app, does it?

NumSum was built to show off the capabilities of TrimPath, a "web Model-View-Controller framework that gives you Rails without the Ruby." Heck, just a good set of JavaScript templates would make my life easier right now.

Apparently, someone has taken the TrimPath SQL parser and the AJAX massive Storage System to build a JavaScript database, one more piece in the microapplications puzzle. With an offline datastore, you can do things that require only occasional connectivity.